| Fuel Pump Poll [message #221098] |
Wed, 04 September 2013 03:44  |
jturbo
Messages: 76
Registered: August 2013
Location: Socal
Karma: 1
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| Fuel Pump[ 47 votes ] |
| 1. |
Mechanical Fuel Pump |
 21 / 45% |
| 2. |
In-Tank Electric Fuel Pump |
4 / 9% |
| 3. |
In-Line Electric Fuel Pump |
22 / 47% |
Looking for info on Fuel Pumps
What people are using Electric or Mechanical.
Also if In Tank or In-Line.
With Either of the Electric has it been worth the cost.
Also have vapor lock problems gone away ?
1978 Royal 403
1977 Birchaven 455
1977 Kingsley 455
All under Upgrading and restoration
Rosemead California
[Updated on: Wed, 04 September 2013 11:42] Report message to a moderator |
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| Re: Fuel Pimp Poll [message #221099 is a reply to message #221098] |
Wed, 04 September 2013 06:03  |
kerry pinkerton
Messages: 2565
Registered: July 2012
Location: Harvest, Al
Karma: 15
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A lot of people use both a mechanical AND an inline hooked into the aux tank.
Kerry Pinkerton - North Alabama
Had 5 over the years. Currently have a '06 Fleetwood Discovery 39L
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| Re: Fuel Pimp Poll [message #221103 is a reply to message #221098] |
Wed, 04 September 2013 06:54 |
rvanwin
Messages: 325
Registered: April 2007
Location: Battlefield, MO
Karma: 6
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| jturbo wrote on Wed, 04 September 2013 03:44 |
Looking for info on Fuel Pumps
What people are using Electric or Mechanical.
Also if In Tank or In-Line.
With Either of the Electric has it been worth the cost.
Also have vapor lock problems gone away ?
|
With in-tank pumps and with fuel injection I have not experienced any vapor lock problems. Cost of two fuel pumps (about $40.00 each) and some time (my time is not worth much:-) .
Added advantage of getting rid of the selector valve and having an always ready backup fuel pump. The disadvantage is having to drop a tank if a pump goes bad.
Randy & Margie
'77 Eleganza II '403'
Battlefield, MO
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| Re: Fuel Pimp Poll [message #221107 is a reply to message #221098] |
Wed, 04 September 2013 07:25 |
George Beckman
Messages: 1085
Registered: October 2008
Location: Colfax, CA
Karma: 11
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Senior Member |
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| jturbo wrote on Wed, 04 September 2013 01:44 |
Looking for info on Fuel Pumps
What people are using Electric or Mechanical.
Also if In Tank or In-Line.
With Either of the Electric has it been worth the cost.
Also have vapor lock problems gone away ?
|
EFI with inline pump pumping 17 psi. Was very pleased about not having vaporlock problems in 45k miles... Until
Monarch Pass, CO.
It was hot but no hotter than we have driven in many times before.
It was high but we cross the Rockies every fall.
It was 85 octane with ethanol, but we use it every fall.
Hoses were all fixed, etc. I will check things again. It must be on the suction side as I doubt the gas was boiling on the 17psi side. When the pressure dropped to 5 psi hard to say what was happening on the pressure side.
'74 Eleganza, SE, Howell + EBL
Best Wishes,
George
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| Re: Fuel Pimp Poll [message #221119 is a reply to message #221098] |
Wed, 04 September 2013 09:54 |
habbyguy
Messages: 896
Registered: May 2012
Location: Mesa, AZ
Karma: 3
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I've got inline electric (and a mechanical at the front, of course). I've never had the first sign of vapor lock with the inline pump running, though I've only ever had vapor lock once with it off, and that was a typical Arizona summer day (temp on the pavement probably 120-130).
Mark Hickey
Mesa, AZ
1978 Royale Center Kitchen
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| Re: Fuel Pimp Poll [message #221120 is a reply to message #221098] |
Wed, 04 September 2013 10:13 |
bwevers
Messages: 597
Registered: October 2010
Location: San Jose
Karma: 5
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I've got mechanical on main tank and electric on reserve tank.
Bill Wevers GMC49ers, GMC Western States
1975 Glenbrook - Manny Powerdrive, OneTon
455 F Block, G heads
San Jose
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| Re: Fuel Pimp Poll [message #221128 is a reply to message #221107] |
Wed, 04 September 2013 11:45 |
jturbo
Messages: 76
Registered: August 2013
Location: Socal
Karma: 1
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when your using e85 I assume you mileage is terrible???
As I used it in my Lincoln navigator 1 time and only got 11mpg when I get 19 normally.
Why use e85???
1978 Royal 403
1977 Birchaven 455
1977 Kingsley 455
All under Upgrading and restoration
Rosemead California
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| Re: [GMCnet] Fuel Pimp Poll [message #221157 is a reply to message #221099] |
Wed, 04 September 2013 17:07 |
mtnman111
Messages: 20
Registered: August 2004
Karma: 0
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I use the stock mech pump plus an in line elect pump, works ok. 1974 26' glacier 455cu.
Have a great day, larry c.
On Sep 4, 2013, at 4:03 AM, Kerry Pinkerton <Pinkertonk@MCHSI.com> wrote:
>
>
> A lot of people use both a mechanical AND an inline hooked into the aux tank.
> --
> Kerry Pinkerton
>
> North Alabama, near Huntsville,
>
> 77 Eleganza II, "The Lady", 403CI, also a 76 Eleganza being re-bodied as an Art Deco car hauler
> _______________________________________________
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L Conley 260 glacier
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| Re: Fuel Pump Poll [message #221159 is a reply to message #221098] |
Wed, 04 September 2013 17:43 |
bobby5832708
Messages: 237
Registered: November 2006
Location: Winter Springs FL
Karma: 3
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I use an external electric fuel pump (Carter P4070) on each tank, no mechanical pump (engine has a blockoff plate covering the hole). No vaporlock or other issues and a 'hot spare' in case a pump or filter fails while driving - just move the dash switch and use the other system. No failures so far in 6 years.
Bob Heller
2017 Winnebago 29VE
Winter Springs FL
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| Re: Fuel Pump Poll [message #239130 is a reply to message #239099] |
Fri, 07 February 2014 18:47 |
corleyw
Messages: 130
Registered: June 2007
Location: Battle Ground, WA
Karma: 0
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Electric pushing into the mechanical. Works for me.
Corley
'76 Glenbrook
29 other vehicles
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| Re: Fuel Pump Poll [message #239131 is a reply to message #239130] |
Fri, 07 February 2014 18:49 |
Bob de Kruyff
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
Karma: 1
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| corleyw wrote on Fri, 07 February 2014 17:47 |
Electric pushing into the mechanical. Works for me.
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Same here--only on demand though.
Bob de Kruyff
78 Eleganza
Chandler, AZ
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| Re: [GMCnet] Fuel Pump Poll [message #239156 is a reply to message #239153] |
Fri, 07 February 2014 21:54 |
Bob de Kruyff
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
Karma: 1
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| USAussie wrote on Fri, 07 February 2014 20:36 |
Bob,
JimB installed a small Facet pump powered by the MAIN / AUX Selector valve circuit in Double Trouble. It's between the outlet of the
AUX tank and the inlet of the Fuel Selector Valve. If I have vapor lock problems I switch to AUX and Bob's you Uncle, the problems
gone!
Regards,
Rob M.
Sydney, Australia
-----Original Message-----
From: Bob de Kruyff
corleyw wrote on Fri, 07 February 2014 17:47
> Electric pushing into the mechanical. Works for me.
Understand Rob. I have mine after the selector valve and have a T with a Take-off barb so I can run the pump and fill up my portable fuel tanks for my various toys while camping
Same here--only on demand though.
--
Bob
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Understand Rob. I have mine after the selector valve and have a T with a take-off barb after the output side, so I can run the pump and fill up my portable fuel tanks for my various toys while camping. I usually boon dock for a week or so without moving so I like to suck fuel out of the tanks selectively if that makes sense.
Bob de Kruyff
78 Eleganza
Chandler, AZ
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| Re: Fuel Pump Poll [message #239168 is a reply to message #239131] |
Sat, 08 February 2014 01:22 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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| Bob de Kruyff wrote on Fri, 07 February 2014 18:49 |
| corleyw wrote on Fri, 07 February 2014 17:47 |
Electric pushing into the mechanical. Works for me.
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Same here--only on demand though.
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Same here. I seldom use it, but I also try not to buy craponol laced fuel whenever possible.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: Fuel Pump Poll [message #239182 is a reply to message #239168] |
Sat, 08 February 2014 09:35 |
Bob de Kruyff
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
Karma: 1
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Senior Member |
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| Ken Burton wrote on Sat, 08 February 2014 00:22 |
| Bob de Kruyff wrote on Fri, 07 February 2014 18:49 |
| corleyw wrote on Fri, 07 February 2014 17:47 |
Electric pushing into the mechanical. Works for me.
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Same here--only on demand though.
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Same here. I seldom use it, but I also try not to buy craponol laced fuel whenever possible.
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I guess I'm more of a creature of habit than I like to admit, but I tend to go to the same campsites up in the mountains and in the summer the temps are usually around 105 F. Sometimes I have to use the pump and other times not at all. Even though all of our fuel here is marked as 10% alcohol, it apparently seems to vary a lot in actual use. I can't explain the difference any other way.
Bob de Kruyff
78 Eleganza
Chandler, AZ
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| Re: [GMCnet] Fuel Pump Poll [message #239185 is a reply to message #239182] |
Sat, 08 February 2014 10:03 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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If your mechanical pump is over 4 years old, best to replace as the
ethanol is deteriating the diaphragm and you'll have fuel in the crank case.
On Sat, Feb 8, 2014 at 7:35 AM, Bob de Kruyff <NEXT2POOL@aol.com> wrote:
>
>
> Ken Burton wrote on Sat, 08 February 2014 00:22
> > Bob de Kruyff wrote on Fri, 07 February 2014 18:49
> > > corleyw wrote on Fri, 07 February 2014 17:47
> > > > Electric pushing into the mechanical. Works for me.
> > >
> > > Same here--only on demand though.
> >
> >
> > Same here. I seldom use it, but I also try not to buy craponol laced
> fuel whenever possible.
>
> I guess I'm more of a creature of habit than I like to admit, but I tend
> to go to the same campsites up in the mountains and in the summer the temps
> are usually around 105 F. Sometimes I have to use the pump and other times
> not at all. Even though all of our fuel here is marked as 10% alcohol, it
> apparently seems to vary a lot in actual use. I can't explain the
> difference any other way.
> --
> Bob de Kruyff
> 78 Eleganza
> Chandler, AZ
> _______________________________________________
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> Unsubscribe or Change List Options:
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--
Jim Kanomata
Applied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: [GMCnet] Fuel Pump Poll [message #239191 is a reply to message #239185] |
Sat, 08 February 2014 10:59 |
Bob de Kruyff
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
Karma: 1
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Senior Member |
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""If your mechanical pump is over 4 years old, best to replace as the
ethanol is deteriating the diaphragm and you'll have fuel in the crank case."'
Thanks for the reminder--it's probably 10 to 12 yrs old and been on the list but I'll move it up 
Bob de Kruyff
78 Eleganza
Chandler, AZ
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